Mechanism for selecting warp-threads or the like.



1 E; F. HATHAWAY & C. LEA. MECHANISM FOR. SELEQTING WARP THREADS OR THELIKE.

. APFLKQATZON FILED 1AN.H, 1909. 1,147,394. Patented July 20, 1915.

Q SHEETSSHEET l.

E. F. HATHAWAY & c. LEA. I MECHANISM FOR SELECTING WARP THREADQ OR THELIKE. k

,fPatentefi July 20, 1915.

'9 SHEETS-SHEET 2.

APPLICATION FILED iAN. 14, 1909.

I36 v I" fn/venior Edym'FHdkw Wieslaa,

E. F. HATHAWAY & c, LEA. MECHANISM FOR SELECTING WARP THREADS OR THELIKE.

,7 APPLICA'I'ON FILED JAN. 14, I909. 1,147,394. Patented July 20, 1915.

v I SHEETSSHEET 3.

i293, l fh Llhl i (mum with/eases. 4 Inventors V'WM. 15m 99 WWWChar'lesLew,

' Z M 46%?! by f E. F. HATHAWAYda 0; LEA, I MECHANISM FOR SELECTINGWABPmi/m5 OR THE LiKE-i, 1,147,39%.

APPLICATION HLED JAN. I4, 1909.

- ratenteajul 20, 1915.

9 SHEETS WE 20M messes.

E. F. HATHAWAY & C. LEA. MECHANISM FOR SELECTING WARP THREADS OR THELIKE.

I APPLICATION FILED JAN. 14, 1909. V v 1 Pgtented July 20, 1 915.

9 SHEETS-SHEET 5.

E.-F. I IATHAWA'Y & C. LEA.

MECHANISM FOR SELECTING WARP THREADS OR THE LIKE. APPLICATION FILED JAN.14, 1909.

Llw g Patented July 20,1915.

9 SHEETS-SHEET 6' Z 8 E. F. HATHAWAY & c. LE A. MECHANISM FOR SELECTINGWARP THREADS OR THE LIKE.

APPLICATION FILED JANQM, I909. I

Patented July 20, 1915.

9 SHEETSSHEET 7.

I E. F. HATHAWAY & C. LEA. MECHANISM FOR SELECTING WARP THREADS OR THELIKE.

APPIHLATION FILED IAN. 14. I909. 1,147,394., Patented July 20, 1915.

9 SHEETS-SHEETS.

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mmmumm sum i E. F. HATIHAWAY & C. LEA. I mecrmmsm FOR SELECTING WARPTHREADS OR THE LIKE.

APPLIC ATION FILED JAN. 14, 1909.

Patented July 20, 1915.

9 SHEETSSHEET 9 STATES PATENT. OFFICE.

EEGAREQHATHAWAY, OE DORGHESTER, ANn CHARLEs LEA, O BOSTON, MASSA-GHUSETTS, ASSIGNORS TO AMERICAN WARP DRAWING MACHINE COMPANY, OF IBOSTON, MASSACHUSETTS, A CORPORATION OF MAINE.

To all tehom it may) concern:

" Be' it known that we, EDGAR F. HATHA- WAY-and CHARLES LEA, bothcitizens of the United States, and residing, respectively, at

Dorchester and Boston, both in the county of -Suffolkfand State ofMassachusetts, have invented an Improvement in Mechanism for SelectingWarp-Threads or the like, of

which the following description, in connectionwith the accompanyingdraw1ngs, 1s a specification, like letters on the drawings representinglike parts.

may find application, for example, in ma- ,chine's empl'oye'dforpresenting the ends of a new warp to the harnesses of a loom priortothe;weaving operation, and to thls end may be embodied in the form ofa drawingin"'machine where the new warps ends are placed directlythrough the appropriate heddle'eyes, of the harnesses by a drawing-inneedle,or they may be embodied in the form off-tying, cementing ortwisting machines where the new warp ends are individuallv united to thecorresponding ends of the old warp, which latter are already,appropriately positioned in the loom harnesses.

'-\Vhile our invention, therefore, may be i embodied *in any machines ofthe above class employingwarp thread or other selecting mechanisms, andwhile it also may have useful application in machines outside of thespecified class, in the present instance, for

th'e sake'of illustration, we have shown one form of our inventionembodied in a warp drawing machine. Furthermore, whlle the separatingand selecting mechanism may have useful application to the separation ofthe heddles of a harness, or to the separation of other loom elements,in the described embodiment thereof we have shown it as applied to theselection and separation of the-warpthreads preparatory to theirpresentation to the drawing-in mechanism.

. taken in connection with the accompanying our invention will be bestunderstood by referenceito the following description when Specificationof Letters iatent.

MECHANISM FOR SELECTING WARP-THREADS OR THE LIKE.

Patented July 20. 1915.

Application filed January 14, 1909. Serial No. 472,181.

illustration of one specificembodiment thereof, while its scope will bemore particularly pointed out in the appended claims.

In the drawings: Figure 1 is a plan view of the principal working partsof a drawing-in machine embodying one form of our invention, the machineframe as well as other parts of the machine being broken away; Fig. 2 isa rear elevation on a larger scale showing one end of the superstructure'0f the machine; Fig. 3 is a similar view showing thefopposite end ofthe superstructure; Fig. 4 is a section inend elevationon the same scaleas Figs. 2 and 3 taken on the line 4-4 in Fig. 3; Fig. 5 is a rear viewof the warp frame or carriage; Fig. 6 is an end view of the carriageshowing the relation thereto of the warp beam holder; Fig.

7 is an enlarged detail showing the action.

of the warp worm upon the threads of the warp; Fig. 8 is a section takenthrough the warp worm on the line S8, Fig. 7 and showing the worm in oneposition; Fig. 9 is a similar section showin the worm in a differentposition; Fig. 10 1s a detail show ing in rear'elevation a portion ofthe driving gearing for the-head of the machine; Fig. 11 is an enlargeddetail showing the support for one end of the lease rods; Fig.

12 is a similar view showing the support for the'opposite end of thelease rods; Fig. 13 is a section in end elevation on the line 13-13 inFig. 11; Fig. '14 is a sectional plan showing a detail of the lockingclamp for the warp carriage; Fig. 15 is a similar detail of the lockingcam of the clamp bar;

Fig. 16 is a vertical sectional end elevation taken through the leaserod guide or sup.-

port on the traversing carriage; Fig. 17 is an end view in detail of theautomatic ratchet and pawl feeding mechanism 'for the warp carriage;Fig. 18 is a side elevation of the ratchet and pawl mechanism;

'Fig. 19 is averticaltransverse sectional view taken through the patternhead, show- .ing the driving gearing. ,Fig. 20 is a. View similar toFig. but showing the worm turned to a different position; Fig. 21 is asimilar view showing still another position of the worm; 'Fi ."-22- 1 sa plan view in sec-- tion taken through the warp carriage and showingthe tensioning rolls; Fig. 23 is a detail partly broken away showing oneend of the warp carriage and the attachment gears for the tensioningrolls; and Fig. 25

is a detail partly in section showing the at- 'tachment of thetensioning rolls to their respective driving elements.

Although, as stated, the invention in many of its features is applicableto machines other than warp drawing machines, and to other types of warpdrawing machines than herein shown, the various features hereindisclosed are applied to a warp drawing machlne of a well-known form. s

Referring more particularly to Figs. 1 to 4-, the-machine, asillustrated, is provided with a body or frame portion 1 mounted upon thesupporting legs 2, and also with an lect and feed according topredetermined ararch 3 above the supporting frame for supporting certainparts of the superstructure. While'other means .for securing the desiredrelative movement between the warp, harnesses, reed and drawing-inmechanism may be employed and for securing the desired alinement of theseveral parts, in the present form of the machine the harnesses (ofwhich four are shown), the warp and the reed are supported by the arch 3in a general parallel arrangement, being given each a slightcompensating movement only, while the drawing-inmechanism including thedrawing-in needle is traversed across the entire extent of the warp. Anysuitable form of drawingin mechanism may be employed, the needle in thepresent instance being mounted upon a carriage 4, which is positionedfor movement lengthwise the bed 1 of the machine by a suitable nut 5thereon engaging the longitudinal screw shaft 6, whereby a suitable andpreferably continuous movement is imparted to the carriage and itsneedle. To reciprocate the needle as it is traversed, there is splinedupon the main driving shaft 7 of the machine a gear 8 (Fig. 4:) meshingwith and serving to drive a gear 9,.the latter mounted upon the.countershaft 10 on the carriage. The shaft 10 has secured thereto (Fig.1). the gear 11 meshing with the pinion 12 on the horizontal drivingshaft 13, the latter being provided with a crank disk 14; Connected tothe crank disk is a link 15 jointed to a lever arm 16 pivoted upon thebase of the carriage the arm in turn being opposite end connected to theneedle actuating arm 18. The actuating arm 18 is pivoted at the base of.the carriage and has at. its other end the slot 19 adapted to receive apin 20 connected to a sliding actuator 21, which latter carries thedrawing-in needle 22; and is reciprocated by the described mech--]ointed to a link 1 which latter has its member 35.

ping or Withdrawing the thread from the needle after it has been placedthrough the reed and proper heddle eye, suitable 006perating means areprovided, such means herein comprising the stripper arm 24 mounted to bereciprocated by the shaft 25, the latter having a beveled gear 26meshing with the gear 27 of the shaft 13. To impart the desired movementto the stripper arm the shaft 25 is provided with the crank disk 28, andto this-is connected the end of the stripper arm, which is slidablymounted in an oscillating guide Way 29. This causes the stripper arm toexecute an elliptical movement in stripping the thread from the needle.As indicated in F .ig. '1, a hand wheel 30 is mounted upon the shaft'l3and may be employed to operate the drawing-in mechanism by .haiid {ifdesired. In the described form of machine there are also provided uponthe traversing carriage. 4 devices adapted to serangement the warpthreads, reed dents and harness eyes with reference to the path of theneedle. While other means may be em ployed in the present machine, suchdevices -comprise operating rods or shafts (six in rod is provided withseparating devices consisting herein of a worm 32 which is of the samegeneral construction as that shown in the U. S. patent to Field No.600,670. At

their opposite ends the said shafts are journaled in an upright framemember 35 carried by the sliding frame 36 rigidly connected to theneedle carriage lto move therewith. During the travel of the needlecarriage therefore thei are carried along with the needle and. for eachseine-revolution ,of a separator shaft. an

' eye of the corresponding harness is presented within the path of thedrawing-in needle, while another semi-revolution places the harness eyeout of the needle path. The dents of the reed are separated andpositioned by means ofa reed opener 37 carried by the reed opener shaft38, the latter journaled at 39 on the needle carriage and havingits.opposite end connected to the frame At each full revolution of thereed opener shaft the appropriate reed splits are spread and opened forthe passage of harness separator shafts the needle. The reed opener maybe of any desired type, but as herein shown is of the generalconstruction disclosed-in U. S. Patent No. 871,680. The shaft 40carrying the nism.

of a longitudinal adjustment under the wedging action of the reed opener37, while the harnesses, which are represented at44,

' are each separately sustained, as represented, upon carrier bars 45(Figs. 2 and 3), the latter slidably mounted upon the rollers 46, so asto permit the desired longitudinal compensating movement of theharnesses under the action of the harness selecting mecha- Any suitablemeans may be provided to time the rotative movement of the harnessseparating shafts, the reed opener shaft and the warp separating shaft,and anysuitable mechanism may be employed to control such timing.Herein, referring more particularly to Figs. 1 and 19, the main driveshaft 7 has splined thereon a beveledgear 47 meshing with the beveledgear 48, the latter secured I to the transverseinclined shaft 49. Thelatter, in turn, through the beveled gears 50,

drives- 'the' short longitudinal shaft 51. Mounted upon theshaft 51 is adisk 52 Which carries a pin 53 engaging with the -star wheel 54, so thatfor each revolution of 1 the shaft 51, which corresponds to a completeoperative cycle of the drawing in needle,

' the star wheel is turneda fraction of a revolution. The star wheel issecured to the shaft 55 carrying the larger gear 56 meshing'with a.smaller. overhead gear 57. The latter is mounted upon the shaft 58 andis provided with a gear 59 meshing with the overhead gear 60, the latterconnected to drive the warp separating'shaft 40. The separating shaft40, as well as the shafts 31' and 38, are removably held at their endsby similarly constructed sockets, of which the socket for the separatingshaft is indicated in Fig. 10.

Referring to Fig. 1.0, the endof the shaft 40 enters a socket formed inthe head 6l on the prolongation of a shaft 62, to which latter issecured the gear 60, The head 61 is provided with a longitudinallydisposed radial slot 63 wherein there ispivoted a latch .64 normallymaintainedin locking position by, the spring 65. The forward end of thelatch has a head 66 cooperating with a notch 67in the end of the rod 40,so that the latter is normally held within the socket againstwithdrawal. Each of the harness separating shafts is removablysecured insocket members of like construction, but instead of being constantlyrotated as'is the warp separator shaft, they are, together with the reedopener shaft, preferably intermittently ro and in accordance with aPtdfltr- [by the insertion member under 1 that they can be readilywithdrawn oneihy glee mined pattern arrangement, so as to cause thedrawing-in to take place through the desired heddles and reed dents. Theappropriate movement of the harness separator shafts and the reed openershaft is obtained by means of a pattern chain represented gener ally at72 which cooperates with a series of. clutches 73, the latter interposedbetween the several intermeshing gears 74, and their respective shaftsso that each of the latter is rotated when its clutch is rendered activeby the pattern chain, such chain of gears 74 being driven shaft 55. v

The details of the pattern chain, the driving gearing for the harnessseparator shafts and the reed opener shaft being well known on machinesof this type, no detail illustra tion is necessary, and it will beunderstood that, according to theadjustable pegging of the patternchain, the separator shaft for (Fig. 19) from a gear 68 on the anyparticular harness may be given half a revolution at each halfrevolution of the warp worm and on each reciprocation of the needlethereby causing the alinement of the foremost heddle eye for thatparticular harness withthe needle and the selected warp thread. On thenext half revolution of the harness shaft, the eye is passed on outofalinement with the needle. It will also be understood that thisarrangement permits the automatic selection of the heddle eyes' for thedrawing-in operation in any desired order or-sequence. I

-Turning now to the carriage or support for the warp threads, whilethismay be of any suitable construction, in the described embodiment of ourinvention the same is comprehended in a frame comprising the up rightend supports 75 from which extend rods 76 which adjustably support theWarp carriage. upon the guiding rollers 77. Lower track rods 78 are alsoprovided, one of which has its inner face formed with teeth (see Fig. 2)to'engage the worm 79, which latter may be turned automatically or byhand through devices to be described to effect lone gitudinal adjustmentof the carriage and the warp threads sustained thereby. The framemembers are connected by rods 80 and also have upwardly extended pieces81 bolted thereto, which latter at their upper ends are provided withpockets toreceive the upper removable clampbar. The latter may be of.

consists of a channel member 82 of sheet metal orother suitablematerial, into which the outwardly directed longitudinal track anysuitable construction, but preferably bar covered with frictionmaterial, such as felt, rubber or the like. L threads may be clampedwithin-the channel such friction If desired,..- thex" means of theclamping bolt 85. The latter,

one as the drawing needle successively en; gages them, but, in theillustrated form of machine, the clamp is employedmerely to place thewarp in the machine, after which the threads are engaged by suitabletension- (see Fig. 2) in the lower end of one frame member 75, while theopposite end is supported by the lower end of the remaining frame member(see Figs. 3 and 14) through is mounted to turn in the frame member 75and is threaded at 86 into the endof the clamp bar 84. The handle 87 issecured to the end of the bolt 85, so that, by turning .the same, thebar may be clamped tightly in any selected position of adjustment, towhich it has been previously turned. To tighten the threads, therefore,it is only necessary to loosen the bolt 85 and, after swinging down thelower clamp bar until the latter has drawn thethreads into the desiredtension, again to tighten up the clamping bolt. The lower clamp bar isprovided with anlinsertion member 88, preferably covered with rubber orother friction material and fixedly attached to the'metal carrier 89,the

- insertion member being so shaped that it effectually retains theclamped threads against withdrawal. To permit the ready insertion of theremovable member 88 in the lower bar, there is provided at each end aretaining latching cam 90 pivoted at 91 upon the links 92, the latterpivotally attached at 93 to lghe lower clamp bar 84. To release theinsertion member, the handle 9a of the cam latch is swung in thedirection of the arrow (Fig. 15), thereby releasing the cam and, thelinks being then swung back out of the way of the carrier 89, thelatter, with the insertion member, can be readily Withdrawn from theclamp bar.

Referring now more particularly to the separating and selectingmechanism for the warp threads, while their selection may beaccomplished by devices differently constructed from the one hereinshown, We have herein provided means for accurately selecting andseparating the individual threads from the organized warp by means of athread separator acting upon a leased warp. While excellent results havebeen obtained with separating devices of the prior art, satisfyingcommercial requirements for many grades of goods, it has heretofore beenpractically impossible to secure the separation of the warp threads withsuch uniform accuracy as to satisfy conditions of great exactness suchas pertain, for example, on

striped work, where the drawing of crossed threads or the wrong threadsor doubles results in permanent imperfections not readily corrected, asmay be done in the case of plain goods. We have found that, by the useof a separating device acting upon a leased warp and particularly arotary separator acting upon a double leased warp, a-

'practically errorless separating mechanism can be constructed.

Referring to the drawings and particularly to Figs. 7 to 9 and 20 and21, the active end of the warp separator shaft 40 is provided with aseparating device 95, here in the form ofa helical screw or worm,preferably having a thin wedge-like advancing lip 96, although the shapeand proportions of the worm will naturally be widely varied fordifferent classes of goods and to suit varying conditions of use. Theseparating screw is preferably caused to operate between upper and lowerlease rods 97 and 98, which latter are so arranged between the alternatethreads of the warp as to form the warp into a double lease; that is tosay,-

alternate threads pass on opposite sides of the upper rod 97 thenreverse about the screw shaft 40, and are then given a second reversalabout opposite sides of the lower rod 98, thereby forming two lines ofcrossings at 99 and 100 respectively above and below the separatorshaft. Preferably the lease rods 97 and 98 are maintained in such closeproximity to the warp worm that the .two sets of thread crossings areheld closely adjacent to or in line with the path of the lip 96 of thewarp worm. This has been found materially to assist in the certainty ofits action.

In the illustrated form of machine the "lease rods are removably mounted(Fig. 12)

in sockets 101, the latter attached to one of the frame members 81, fromwhich sockets theymay be readily withdrawn. At their opposite ends (Fig.11) the lease rods rest in a socket piece 102 from which they can bewithdrawn by a lateral movement, but in which they are normally retainedby a vertically sliding latch 103 (Fig. 13) mounted in a transverse slotin the socket piece. The latch 103 has curved finger portions 10% whichare normally pressed down by the spring 105 to overlie the rods andretain the same permitting, however, removal of the rods when the latchis pressed upward. In order to keep the lease rods in rigid operativerelation to the separator shaft, in addition to the described supportsfor the ends of the rods, there is preferably provided adjacent theseparator worm an intermediate guiding support for such rods, the sameherein being provided by the guide block 1106 (Figs. 7 and 16) in whichthe said rods are retained by a latching memher 107 (Fig. 16) ofsubstantially the same construction as. the latching membenl-O. Theguide block 106 is fixedly attachedto the uprightsupport 108 (Fig.3),the latter attached to and movable with the supporting arm or bracket 34on the needle carriage (Fig. 4). To provide an end journal bearing forthe warp worm shaft, the latter is provided-with a prolongation 109journaled in the guide block 106 and retained therein by the latch 107.By lifting the latch 107 the lease rods together with the separatorshaft can be withdrawn from the guide block. The double lease describedmay be formed in the warp at anyv time prior to the warpdrawing'operation, as, for example, while the warp is in the slasher. Asreceived for the warp drawing operation, the warp will ordinarilybeprovidedwith tapes, cords or other leasing members positioned relativelyto the warp threads as are the two lease rods and the separator shaft.

Preferably means are provided for facilitating the installation of thewarp in the. drawing in machine. As an example of such means we haveprovided the portable truck 110 (Fig. 6) having journals to receive thewarp beam for the new warp. The ends of the new warp are then clamped bythe upper clamping member 82, the latter for this purpose being removedfrom the warp carriage. Means may be provided for holding the clamp baron the truck together.

with the warp beam, and, for thispurpose, at each end of the truck thereis preferably provided an upright support 111 carrying the verticalplate 112, the latter having a pocket 113' to receive, the upper clampbar and notches 114, 115 and 116 to receive-the lease rods and warpworm, With the warp beam and warp clamp .bar in place on the truck andthe, warp threads clamped as described the leasing cords, tapesor,;other leasing members may pe removed and the leaserods and the warpworm substituted and thenplac'ed in the notches 114, 115- and 116 in thetruck frame. In this condition, the truck may then be wheeled to a pointdirectly back of the drawing-in machine, as is represented in Fig. 6,and the upper clamp bar, leaserods and separator shaft removed from. thetruck plate 112 and inserted in the warp carriage on the machine, aspreviously described. This leaves the threads in the conditionrepresented by dotted lines (Fig. 6) their position prior toinstallation in they machine being shown in full lines. Afterinstallation in the machine, the threads are clamped to the Warpcarriage by'forcing. the insertion member 88 into the lower clamp bar84, as described, .theclamped threads being then tensioned, aspreviously described, by "swinging down the lower cl'amp bar.- After:being clamped in the warp carriage, tensioning devices, such as threads1 to place an, increasedtension; on :the

wedge-like advancing. lip "96 constitutes; a

eter located in advance ofwthej separator which act better toismooth outandfsep suc; threads-asghavea tendency to:.cling .-to};fl

friction rolls are preferably applied to the same, such device beingmore fully'referred to hereinafter. J 5; -The separating .device' 95with;.its -\;thin" leased warpwedge separator and its gfiQtlOIl is asfollows: As the separating 'shaftriis turned in the direction of thearrow shown; in Fig. 7 and the advancing lip. of; the worm arrives atsuch a position, as is there shown, the wider or thicker part ofthefliphas :already begun to crowdagainst the threadsat or adjacent the lowerline ofv crossings; 100.

This causes all the threads, not-yet; engaged by the screw (or at theright ofwtheal'i jas 0 viewed in Fig. 7) to be crowdedhasas thererepresented. As the lip 50f. the: screw moves upward, however, theforemostth read which, it will be seen from Fig. 7,wpa'sses over theback of the separator shaft,-'is allowed to slip. forward againstth'elwed'ge of the then receding edge offlthefiscrew helix, so that agap is formed between suchthread and the succeeding threadatzthefrontiof the rod. The control of the basa -therefore,

ife. the capacity to crowd andholdzbackthe succeeding threads, passes tothe nextthread,

which, it will be noted, liesfoverwthefront 01535,.

the separator shaft and tends to; beipressed still farther back as thescrew lip moves; up, thereby formin an increasing/gap, between suchthread an the precedingorifor'emost thread. When the, screwlipreaches'itsnip-1 permost position, as represented in Fig.- .21, thegap between the thread at-thejrearcof the rod and the foremost threadatthe front-- of the rod is of such an extent-that. theslip I readilyenters the gap and pickszolf theg;first.-; 1,. v thread with certaintyand beyond-possibilw ity of failure. On the remaini'n -'*isemi'- Qrevolution of the separator shaft t easame action takes .place at thebackofuthegshaft'. The lip moving downwardly-attire rear of theseparator shaft the next to, the foremost thread which lies overthezbackofithetshaft. 1 is forced back, holding back. the; entire. body.I, of threads and forming a gap between.-it% and the foremost thread,which latter liesi; ove'r.-

the'front of the shaft, and whieh ispp y quently picked off by thescrewlip i-whenthe with a tapered portion of, ncreasing.

screw, soythat the threads as they approach I the latter areplaced underan increasingf,

tension' and'such tapered portion ifidesir may be provided with. thecorrugation" eac other. As'jeach thread passesitliin. the control of-theseparator screw withiale ternate ones on:- -'oppo 'te sidesthereof;fitis conducted to', 'a position of; a1ine'mentwith 89- the movements ofthe separating device may be timed to position the thread in any desired'way with relation to the needle path, preferably we provide a stop118against which the foremost thread is drawn into accurate alinement withthe needle path. The movements of the separator screw are then so timedthat the thread is carried somewhat past the stop and drawn taut acrossthe same before the needle starts its retractile movement.

Preferably, though not necessarily, the needle hook is caused to passbeyond the plane of the threads before the thread reaches the stop andis retracted after the thread has been drawn against the stop.

The stop may be of any suitable construction, but herein comprises amember 119 adjustably mounted upon the upright sup- .port 108 andpresenting the rearwardly directed finger 118 extending out beneath thewarp screw in line with the threads. Since the warp screw selects andseparates two threads for each rotation thereof, its speed is preferablyreduced to one half of that imparted to any harness separator shaft whenthe. latter is rendered active by' its clutch. While the action of thewarp screw upon the leased warp is such that accurate operation thereofcan be maintained under varying conditions of warp adjustment orposition relatively to the warp worm, preferably we employ means foradjusting the warp carriage and the warp lengthwise the machine so thatwhere wide variations'exist between the width or extent of the warp andto the width or extent of the harnesses, the warp may be adjusted fromtime to time to correct orcompensate for such differences and maintainthe same relation between theseparating screw and the foremost warpthreads. While thisanay be effected invarious ways, and, while anoccasional adj ustmentonly by hand or otherwise will ordinarily suifice,in the illustrated form of the machine we have provided means foreffecting such adjustment of the warp either-automatically or by hand.Herein this is provided by engagement between the toothed rack or bar 78on the warp carriage and worm wheel 79. i The worm 79 is connected to beturned either by a power-actuated ratchet and pawl mechanism or by asprocket wheel 120 (Fig. 2) secured thereto and engaging the sprocketchain 121, the latter passing upward to a sprocket wheel 123, which, inturn,is secured to a gear124'meshing with a pinion. 125.

The latter is mounted on the shaft 126 curedi to theihan d rod 127"extending the entire length of the superstructure of themachine, whereit is at all times within the grasp of the operator. The rod 127,bei ng'journaled at opposite ends in the hangers 128, may be turned, andthereby, through the described transmission gearing, caused to turn theworm 79 and effect the longitudinal adjustment of the carriage.

In addition to the longitudinal adjustment of the warp carriage, the rod127 has a swivel connection at its opposite end to the block 129 (Fig.3) which is slotted to receive the lever 130 connected to the beltshifter for the machine by connections not herein shown, wherebylongitudinal movement of the rod will act to apply or shut off the powerfrom the machine.

F or the automatic longitudinal adjustment of the warp frame, there issecured to the worm 79 (Figs. 17 and 18) a finely toothed disk, orratchet wheel 131, having mounted to swing about the shaft of the wormwheel under a slight frictional retardation. The opposite or outer end"of the pin 133 is secured to a stop lever 135 which abuts against acontact screw 135 -having a fine degree of adjustment. Connected to thestop lever 135 is an actuating rod 136, the other end of which ispivotally connected to a slotted portion of the actuating'lever 137. Thelever 137 is intermittentlyreciprocated by a cam 138 on the end of thelead screw 6, so that, for each rotation of the screw, the actuatinglever and the pawl undergo one complete reciprocation. A spring 139 'isprovided tohold the actuating lever against the cam. As the pawl ispushed away by the actuating lever, it grips the disk and turns theratchet through a fraction of a revolution, and as it is swung in theopposite direction it first releases the disk and then, together withthe swinging arm, is allowed to advance over the periphery of the diskto take a fresh hold.

The machine may be driven through power applied in any desired manner,but, as the driving mechanism may be of .-usual and ordinaryconstruction, the same is not herein shown. Power, however, ispreferably transmitted to the lead screw 6 from the main driving shaft 7by variable speed transmission devices, but as these may be of anysuitable construction it is deemed unnecessary to illustrate suchdevices herein.

During the operation of the machine, by suitably adjusting the throw ofthe warp feeding pawl 132, the warp may be made to undergo anincremental longitudinal adj ustment for each stroke of the needle whichcan be designed to give the required aggregate adjustment necessary forthe warp. or, if desired, fromtinie to time the deviations foremostwarpthreads from =de- "siredposition may berectified by. handad- I ii'ramethrough the justment of the warp rotatablehand rod If desired, themechanical feature may at any time be discontinued and the handadjustment alone be relied upon, and as stated, under favorableconditions, both adjustments may be dispensed with, if desired. We havestated that,'while the upper clamp bar 82 may be I employed to retainthe threads during the operation of the machine, each thread beingwithdrawn from the said clamp when it is seized by the needle,preferably we provide special tensioning means for giving an increasedtension for the threads, particularly at or about that portion of thewarp engaged by the separating worm. Such ten sioning devices may be 0any desired form, but herein we have shown tensioning rolls,

three in number, comprising a main roll 140 and two smaller rolls 141and 142. These rolls are preferably covered with leather,

felt, or other suitable friction material,

the two rolls.

adapted to engagethe warp threads and draw them up, the rolls beingrotated to maintain an even tensionon the same, by suitable gearingconnections. The two upper rolls 141.. and 142 are made removable fromthe warp carriage, and, when the'warp is initially installed 'in themachineasdescribed, the warp threads lie across the outer face of themain roll 140, as represented in Fig. 6. The roll 141 is then placed inposi-. tion thereby gripping the threads between The threads are thenseparated from. the clamp 82, for example, by severing them just belowthe clamp, their loose ends thereupon falling down about the inner sidesof the roll-140, as represented in, dotted lines in Fig. 6. With thethreads in this condition the roll 142 is then inserted and, with theroll 140 driven right-handedly, as viewed in Fig. 6, and the rolls 141and,.142 left-handedly at a slow speed, the warp threads are drawnbetween the rolls and kept under the'desired tension. Such drawing-inneedle.

, to separate the .djacent threads, the comb being sus'tained just belowthe roll 140 by the provision of slots 144 (Fig. 25) in the walls of theupright frame members 81. Ordinarily, however, the use of. such combwill be unnecessary. For imparting the necessary rotation to the rolls,the 'main roll 14'0- is connected to the driving shaft 145 (Figs. 2 and5). which is driven the sprocket ethane, the latter turn being drivenfrom a sprocket (not shown) on. the

lead'screw. To permitthe longitudinal ad- .justment of the "warp framewithout interfering with the turning of the tensioning rolls, the;roll140 is connected to the driving shaft 145 (Fig. 25) by means of a slipjoint comprising the driving pin 147 engaging the slot 148 in the shaftof the roll. To turnthe tensioning rolls 141 and 142 in the oppositedirection, theroll 140 is pro-.

vided at its opposite end (see: Figs. 22 and 24) with a gear 149 adaptedto mesh with the smaller pinions 150 and 151, connected.

respectively to turn the rolls 141 and 142. To permit the efisy removalof the smaller upper roll 141 from the warpcarriage the same has one endheld in positionby the' swinging latch 152, the opposite or driven i'end having a pin and slot connection to the socket piece 153 to whichthe driving pinionf 150 is secured. By raising the latch 152 the i roll141 may be withdrawn from its socket The rollfl and removed from themachine. 142 has itsdriven pinion similarly connected with a drivingsocket 154, its opposite end being journaled in an open-mouthed bracket155 from which it may be liftedfor the withdrawal. of the roll. I

- While we have shown, for sake of illustration, one specific embodimentof our invention in one type of warp drawing machine,

it is to be understood that the sameis not limited either to this or anyother specific 100.

construction of drawing-in machine, nor is the application of theinvention limited alone to drawing-in machines, since it particularlyhas. usefulapplication to tying-in machines, cementing machines,twisting machines and the like, where the separation of warp threads isnecessary for presentation to tying, cementing, twisting or otherdevices. Furthermore, while we have described in detail one specificembodiment of our invention and one 'foundin practice to givesatisfactoryresults, our. invention" broadly is not limited'to thedetailsof construction or the particular arrangement of partsshown, :butis susceptible of extensive modification therefrom without departing 11from the spirit of the invention.

Having thus described our'invention, what we claim 1s:

1. In a machine for separatingand nd};

ing warp threads, thecombination withs'a rotary selecting device, ofmeans forhold ing the warp threads in leased condition relativelythereto.

2. In a machine for separating and select 5- ing warp threads, thecombination Withfa- 1Z6 rotary selecting devioe, of means for-hold; ingthe warp threadfs'gin double leased condition relatively thereto. v

3. In a machine for separating and selecting warp, threads,the'icombination with a,

sat

said selector.

' mechanism, the combination with a rotary to the 4. In a threadseparating and selecting selecting device, of means for maintaining thesame operatively between two sets of warp threads alternating onopposite sides 'of the said selector, each set having its threadscrossing the adjacent threads of the other set both above and below thesaid selector.

5. In. a thread separating and selecting machine, the combination with arotary thread selecting device, of means for holding warp threads inalternating arrangement on opposite sides of the axis of the selector,and means for causing the crossing of alternate threads both above andbelow the axis thereof and immediately adjacent pathof movement of theselecting device.

6. In a thread selecting and separating mechanism, the combination witha warp thread separating screw having a selecting lip, of means forholdinglthe threads in alternating arrangement on opposite sides of thesaid screw and within the circumferential path of the said lip, thealternating threads being also held. crossed both above and below theseparating screw.

7. In a thread selecting and separating mechanism, the combination witha warp thread separating screw having aselecting lip, of means forholding the threads in alternating arrangement on opposite sides of thesaid screw and within the circumferential path of the said lip, thealternating threads being also held crossed both above and below theseparating screw and closely.

adjacent to the circumferential path of the selecting lip. I

8. In a thread separating and selecting mechanism, the combination witha rotary selecting device, of means for holding the 6. threads inalternating arrangement on opposite sides of the axis of said separatingdevice, and means for stretching the threads so held. i

9. In a thread separating and selecting mechanism, the combination witha rotary selector, of means for holding the threads in alternatingarrangement on opposite sides of the axis of said selector, said meanscomprising a holding frame provided with thread clamping means and leaserods also carried by said frame and arranged at either side of the axisof the rotary selector and each holding adjacent threads crossed betweenitself and the said selector. I

10. In a; thread-separating and selecting mechanism the combination witha warp frame of means for holding the threads clamped therein, one ormore lease members; thread separating means, means for causing relativetraversing movement between the separating means on the one hand and thewarp and lease members on the other, and means for maintainingthe leasemembers in fixed and proper relation to the selecting means during therelative traversing movem ent.

11. In a thread separating and selecting mechanism, the combination witha traversmg carriage, thread selecting means thereon, a warp support,one of moreleasing members for the warp, and means traveling with thecarriage and engaging the said leasing members to maintain the same inproper position relatively to the selecting means.

12. In a thread separating and selecting mechanism, the combination witha warp supporting frame, a plurality of lease rods removably supportedin said frame, a traveling car'ri'age provided with thread selecting.mechanism and a guiding member supportmechanism, the combination with aWarp support, a rotary thread selector, means for rotating the same, andmeans on said selector for selecting a thread at each half revolution.

15. In a thread separating and selecting mechanism, a thread selectingshaft, means for holding the warp threads in alternating arrangement onopposite sides of the said shaft, and a selecting screw rotatablycarried by the said shaft to engage and select the successive threads ofthe warp.

16. In a thread separating and selecting mechanism, the combination witha warp support and a thread selecting means operatively related thereto,of a portable support for the warp beam, warp thread clamps for clampingthe threads while on said portable support, and means on said supportfor sustaining one or more lease rods, whereby the leased' warp may bebrought to the machine and leased threads transferred thereto. 17. In aseparating and selecting mechanism for use in connection with a seriesof parallel elements in the weaving art, means for holding said elementsin leased condi tion and continuously rotatable selecting meanscooperating with the elements where they lie crossed for acting upon andsepa rating said elements in succession.

nection with a plurality of elements, a continuously rotatable selectingdevice, and

.meansfor holding said elements in alternating arrangemcn on oppositesides of the axis of said selecting device.

19. In a separating and selectingmcchanism for use in'the weaving art inconnection with a plurality of elements, a rotary selecting shaft, aselectorfl screw carried thereby, means for holding the said elements inalternating arrangement on the opposite sides of the said shaft, andmeans for maintaining adjacent elements crossed on both opposite sidesof said shaft.

20. In a separating and selecting mechanism, the combination with a warpsupport for holding a warp in leased condition, of removable clampingmeans therein for the warp threads, the thread selecting memberextending across the warp, and means permitting the removal of saidthread selecting member with the removal of the warp.

21. In a thread separating and selecting mechanisn'i, the combinationwith a warp support, of a leasing member for leasing the warp, and athread selecting member, the latter forming an addithmal leasing memberfor the warp.

22. In a thread separating and selecting machine, the combination with awarp support, of clamping members for said support, one of said clampingmembers being pivotally attached thereto, and clamping means axiallyengaging the end of said clamping member for elan'iping said clampingmember in any selected position of pivotal adjust ment.

23. In a thread separating and selecting mechanism, the combination witha selecting device, of means for holding the warp threads indouble-leased condition relatively thereto, and power-driven means forstretching the leased threads.

24. In a thread separating and selecting mechanism, the combination withmeans for holding the threads stretched,thread-separating means and aplurality of friction rolls for engaging the threads to tension thesame.

25. In a thread separating and selecting mechanism, the combination withselecting means, means for holding the warp threads stretched, aplurality of friction rolls for engaging the threads to tension thesame, and means for turning said rolls during the operation of theselecting means. 7

26. In a machine for separating and selecting warp threads,'thecombination with a selecting device of means for holding the Warpthreads in double leased condition relatively thereto.

means for wedging the separator between successive leased thr ads.

28. The combination with mechanism for separating elements held inleased condition and adaptedv to be selected by release one by one fromthe main body of elements,

said mechanism including means having a separating movement whereby itis inter posed between the selected element and the main body, saidmeans by the same movement being adapted to separate still further thefreed element from the body of leased elements and-automatic tcnsioningmeans for tensioning the elements.

29. The combination with mechanism for separating elements held inleased condition and adapted to be selected by release one by onefrom-the main body of elements, said mechanism including means having aseparating movement whereby it is inter posed between the selectedelement and the main body, said means by the same movement being adaptedto separate still fur- Y tlier the freed element from the body of leasedelements and means for intermittently applying tension to the leasedelements.

30. The combination with-means for separating elements held in leasedcondition,

said means being located within the lease and adapted to move one ofsaid elements from the main body thereof, of means for intermittentlyapplying tension to the leased elements. v

32. The combination with means for crowding back a series of leasedmembers and alternately freeing the foremost member from opposite sidesof the lease and moving the freed member from the main body, said meansbeing operated by devices within the lease, of means for automaticallytensioning said elements.

33. The combination with mechanism for separating elements held inleased condition and adapted to be selected one by one by releasefromthe main body of elements, said mechanism including a device having aturning movement across the lease whereby it is interposed between theselected element and the main body and at the same time moves theselected element from the main body and automatic means for tensioningthe elements.

34:. The combination with a leased-warp wedge separator or threadtensioning means.

35. The combination with means for bolding s. leased warp, of separatingmeans working across. the line of crossings and adapted o move aseparated thread from the main bocly, and means for automaticallytensioning the leased elements.

In a Warp replenishing machine the combination with means for holdingWarp threads in leasecl condition, means for hQlJ. ing a second set ofelements in general parallel relation to sairl Warp threads, a threaclplacing device or other thread engaging mea11s,n1eans for causingtraversing movement of the threadengaging means relatively to thethreads and. other elements, tlireacl selecting and separating meanshaving fixed relation to said thread. engaging means and adapted tocrowd back the foremost Warp threads, but alternately to release athread from opposite sicles oi the lease and means for coinpensatii'igfor the progressive variation in the relation of the Warp threads to theother elements to inaintaiii substantially sirr' pressure relationbetween the releasing member and the Warp 3?. A machine for drawing Warpthreacls having dl'itwlllg"lllGCllfllllSHl, means for .iold ing warp inleased comli'tion, thread releasing means ii'iaintaiiiecl pressed theforemost thread. of the lease and. aelapt- 6(l alternately to release athread. opposite sioles thereof, saicl thread releasing means having afixed position relatively to the clraiviiig iiiiechahism, means forcausing 1 relative traversing movement between the drawing mechanism andand means automatically to adjust Warp h'oltli means.

38, In a Warp replenishing iiiachiiie the combination with means forholding leasecl Warp threads, engaging mechanism adaptprogressively toact upon said threads a traversing movement relatively to the same aloclalso relatively to a second. set of elements of different wiclth orextent, iii-cans associated with the threacl engagmg means for pressingbaclr the foremost threads of the Warp anti alternately releasing athread from opposite sicles of the lease, and means automatically tomaintain substantially the samepressure between the threarls and sairlmember during the progressive action of the thread-engaging means, v

39. in a War replenishing machine the combination with means for holdinga leased Warp thread, engaging mechanism to act progressively upon saitlthreads and a traversing movement relatively to the same and alsorelatively to a second set of elements of difiierent Width or extent,means associated with the threaclengagirrg means for pressing back theforemost threads ell the arp and alternately releasing threail from opposite sirles or the lease, and. manual means for maintainingsubstantially the same pressree between the threads earl said r ng theprogressive action emhe c -;v me l te-Levee 1. thread member having aWedge-- shaped lip of means ror holding the threads in a ternatingarrangement on the saicl member and i of saicl lip, the alternating sohelcl cross-eel both above il member, means for iig- Billilsclectiiigmeehw use iii co-iihection with a plurality of loom elements,selec g shaft arlaptecl to be irnecl, a selecting i'hemher carriedthereby, me he holding the saicl elements in alternating arrangement eriopposite .zlClCS of saiol shaft, means for causing the crossing adjacentelements on opposite sides sahl shaft.

a threacl-se gjlarating and selecting mechanism the coin 'nation. withselecting device of or holding the Warp threads in double leasetlcondition relatively -therete with lines oil thread crossings on opposits sicles of s cl. device, and means for turning saicl selectingdevice l l. earl-separating and; selecting mechanism, the combiiiationwith a selecting device having Wedge-shaped separating lip, of meansholding the Warp eacls in double lessee. co'hclition With lllleS 0thread crossine's, or; opposite sicles of saitlevice, and i i 11s forturning sairl selectiiii."

ln s iriachiiie for eparating arirl selecting Warp threacls, thecombihation with a seleeti device adapted; to trove. about sans -;torholding the Warp thr ads iii u'llllbli leased condition relativelythereto.

mechsnisir the combination with a selecting .aieaaea .thread separatingdevice having a selecting lip, said device being adapted to turn aboutan axis of means for holding the threads in alternating arrangement onopposite sides of the said device and Within the circumferential path ofthe-said lip, the alternating threads being also held crossed onopposite sides of the axis of said device and closely adjacent to thecircumferential path of the said selecting lip'.

49. In a thread-separating and selecting mechanism, the combination witha thread selecting device adapted to turn about an axis, of means forholding the threads in.

alternating arrangement on opposite sides of the axis of said threadselecting device, and means for stretching the threads so held.

50. In a thread separating and selecting mechanism, a thread selectingshaft, means for holding the Warp threads in alternating arrangement onopposite sides of the said shaft and a selecting member having awedge-shaped selecting lip and adapted to be turned to engage and selectthe successive threads of the Warp.

51. In a machine for acting upon Warp threads, the combination withmeans for holding the threads in a leased arrangement of athread-separating device having a member arranged to continuously bear 1against the warp threads where the latter cross one another, and meansfor moving said. separating member from cne side to the other of thepoint where the threads cross to enter between the foremost thread andthe main body.

52. In a machine for acting upon warp threads, the combination withmeans for holding the threads in a leased arrangement I of athread-separating device having a wedge-shaped separating memberarranged to continuously bear" against the Warp threads where the lattercross one'another, and means for moving said separating member from oneside to the other of the point Where the threads cross to Wedge the samebetween the foremost thread and the main body. 53. In a machine foracting upon warp threads, the combination with means for holding thethreads in leased condition of a separating device movable about an axison the opposite side of which the threads are held in alternatingarrangement, said .names to this specification, in the presence of twosubscribing witnesses.

EDGAR F. HATHAWAY. CHARLES LEA. Witnesses:

THoMAs B. Boorn', IRVING U. TOWNSEND.

